I once chased done a runaway 14m kite dragging one if those small sand screws through a lagoon, which had already snagged anther kite on the way...
Better to use the big ones made for anchoring buildings, 2 feet long a with a bigger diameter screw blade, or choose another option. Only takes a couple more minutes to screw in the bigger anchor.
Also, know the location for your anchor setting your kite up where you want it and pacing it off or laying out your lines, etc.
And if you had a waterproof bag, you could avoid digging by filling it with water.